I have never bought weed with my coins...
Me either.
People who are not bitcoin users always think that it is for weed and guns on the "darknet". They just pick the use case that is most shocking and go with that. No one ever talks about how I buy socks with my bitcoin, but I do.
Apart from that bitcoin's 2 most widely legal use would be: gambling & porn.
I think we need a PR team to emphasize on that, otherwise the media will demonize bitcoin further.